Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31F04SE00151

Record: MDI31F04SE00151

General

Mineral Record Identification
Record Name(s) Hwy 28 Roadcuts - 2000
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1994-Jun-02
Date Last Modified 2022-Apr-13
Created By
Revised By

Commodities

Primary Commodities: Gypsum, Tremolite, Tourmaline



Location

Township or Area: Dungannon

Latitude: 45° 4' 11.63"    Longitude: -77° 43' 23.75"

UTM Zone: 18    Easting: 285626.419   Northing: 4994323.268    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31F04SE

Point Location Description: Point 2.2 km W of Bowen Corner, lot 10, con 11.

Location Method: Conversion from MDI

Access Description: This is a series of road-cuts to be seen on Hwy 28 starting just E of the York River bridge, 11.1 km E of the junction of Hwy 28 (500) and Hwy 62. The second road-cut, at 11.9 km, is the location point.



Exploration History

Mineral location - various - in road-cuts.


Geology

Province: Grenville

Geological Age: Mesoproterozoic  



Geology Comments

Dec 07, 2005 (C Papertzian) - Road-cuts show : at 11.1 km - rare brugnatellite nodules in marble, associated with brucite, clinohumite, spinel, serpentine, olivine, mica, pyrrhotite and graphite; at 11.9 km - tourmaline in pegmatite in amphibolite; at 12.2-12.4 km - aggregates of epidote in amphibolite with actinolite, pyroxene and hornblende; at 13.2 km - gypsum forms an encrustation on amphibolite; at 13.8 km - tremolite-actinolite crystals are abundant in calcite with some hematite. The Detlor Road junction is at 14.0 km. At 14.5-14.8 km - tremolite-actinolite occurs in marble; at 15.7-17.0 km - bladed aggregates of tremolite-actinolite are associated with smoky quartz, diopside and mica.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1TourmalineEconomicOre
2GypsumEconomicOre
3TremoliteEconomicOre
4ActinoliteEconomicOre
5DiopsideEconomicOre
6EpidoteEconomicOre
7MicaEconomicOre
8HornblendeEconomicOre
9HematiteEconomicOre

Mineral Record Details

References

Publication - Rocks and minerals for the collector: Bancroft - Parry Sound area and southern Ontario; Geological Survey of Canada, Miscellaneous Report 39

Publication Number: GSC Misc Rep 39 Page: 20  Date: 1996

Author: Sabina, A P

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/121046


Publication - New occurrences of minerals in parts of Ontario; Geological Survey of Canada, Paper no. 77-1A

Publication Number: GSC Paper 77-1A Page: 336  Date: 1977

Author: Sabina, A P

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/102715


Publication - Catalogue of Canadian minerals; Geological Survey of Canada, Paper 80-18

Publication Number: Paper 80-18 Page: 74, 108  Date: 1980

Author: Traill, R J

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/119519


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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office